Parking device



Novt 30, 1948.

PARKING DEVICE Filed Aug. 25, 1944 2 sheets-sheet 1 95 INVENTOR. Jof//vHOFF/9T.

J. H. MOFFAT 2,455,133

Nov. 30, 1948. J'. H. MOFFAT 2,455,133

PARKING DEVICE Filed Aug. 26, 1944 2 SheetsSheety 2 IN1/EN TOR. Joh/v/7. Maf-mr www Patented Nov. 30, 1948 aan NITED STATES TENT DFFHCEPARKING DEVICE John H. Monat, Indianapolis, nia. Application August 26K,1941i,V Serial No. 551,341

v 3 Claims. l

This inventi-on relates to a parking means for automobiles of thegeneral character represented by Patent No. 2,181,907 dated December 5,1939.

Since the same discloses fore land aft structures simultanouslyoperable, the disclosure herein will be coniined to but one end by Wayof example only, although same may be duplicated as disclosed in saidpatent.

The chief object of the present invention is to simplify theconstruction of the patented structure.

Another object of the invention is to provide semaphore or like warningmeans simultaneously .operable when the device is conditioned foroperation.

The chief feature of the present invention resides in the structureprovided for the accomplishment of said objects.

Other objectsand features .of the invention will be set forth more fullyhereinafter.

The full nat-ure of the invention will be understood from theaccompanying drawings and the following description and claims:

In the `drawing Fig. 1 is a longitudinal sectional view of an automobileequipped with the parking means, same being illustrated at the rear endof the vehicle. Y Fig.. 2 is a rear elevation of saine 'and the rearWarning signal.

Fig. 3 is a front elevation of a portion 4of the vehicle and frontWarning signal. Y

Fig. 4 is a diagrammatic representation of the iuid system.

Fig. 45 is a central sectional View Yof one of the valves illustratedtherein.

Fig. 5 is a central sectional view of the dual connected valves havingsimultaneous operation.

Fig. 'I is a diagrammatic longitudinal section of a vehicle dashmountable valve having selective duid pressure control and of ainodiiication of the valve system shown in vFig. f4 and is taken on line'l-- of Fig. 19 i-n the direction 'of` .the arrows.

Fig. 8 is a .diagram-matic longitudinal .sectional View showing theVmanually operable core of Fig. 7 fin -a second position.

Fig. 9 is a cross-sectional View taken on line Q9 `of l and in thedirection ofthe arrows.

Fig. 10 is a longitudinal section of thesemaphore device. y

In Fig. 1 of the drawings l-' indicates the frame of an automobile Il,and provided Awith axle l2, spring 'I3 and Wheel It. Pivotallysupported yat i5 on a U -shaped depending 4bracket i6 carried by theframe Il] is a VU--shapedarm l1 having an (Cl. ISO-1) Fig. 1.

2 upwardly directed central and outer end portion I8. A lU -shapedbracket l is carried by the frame it and pivotally supported at 2i onextension 19a is the piston rod 22 carrying piston 28 in cylinder 23pivoted jat 24 upon lateral portion 25 of arm il'. llila'chend of thecylinder includes a combination inlet and'outlet 25 and 21. *n

Whenever a single fluid power unit is utilized, it preferably iscentrally positioned. When two such units areemployed, they have theircornbination inlets and outlets connected in parallel and such uni-tsare mounted adjacent opposite sides of the frame i9 and the arm il'..Whenever desired, the vehicle body may conceal coinpletely-the arm i'iand the traversing wheel 28, or same may be exposed as illustrated inFig. 1. Preferably Wheel 28 is positioned so as to lie between the endof the frame iii and a bumper structure not shown. When the bumperI isutilized, the same may protect said traversing Wheel 2t and associatedparts. For clearness the bumper illustration is omitted herefrom. l

*Pivotally supported at 29 on the depending bracket i6, and at eachsidethereof, is anv arm 39 having axle engaging end 3l. A link 32 ispivotally connected at 33 to arm il and at 34 to said arm 3i). Wheneverarm Il is lowered, the arm 30 is elevated so that the spring I3 is retained in loaded relation despite the unloading thereof incident totransfer of the load from Wheels i4 to the Wheel .23 when the latter islowered. Hence, Wheels ill are raised with the frame It in thisoperation and ythe Wheels are clear of the road or pavementvwhenthevvheel .28 is rotated by moving the vehicle laterally for parking,etc. i

All of the foregoing is fully illustrated in the aforesaid patent.Herein the wheel 28 includes a rotatablesupport in the form of hub 35.by which the same 'is supported on trunnion S carried by the portion I8of the arm H .and retained by nut 3l' and washer 38. l,

Suitably secured at 39 'to the portion liof arm l-'l is a reversiblefluid pressure or vhydraulic operable motor d0, the `power pinion ll ofwhich meshes with gear d2. Coaxial therewith'is the driving pinion 53which constantly meshes with the driving gear All having plate iiange d5oiset therefrom and secured to Wheel 28 as at d'6, see

Motor it has combination inlet andv eX- li'aust conduits llileand 4th.'y. I After .arml l1 is lowered pressure 'fiuid'is supplied to motor`iito rotate same in the desired direction for desired directionalrotation of wheel 28. Hence the vehicle is movable laterally and intoand out of a parking space as desired.

Reference will now be had more particularly to Fig. 4 and also to Figs.5 and 6. In the former 41 indicates a reservoir for oil or like uid andpreferably same is suitably secured to or adjacent the engine of thevehicle so that engine heat will retain the liquid in the desired stateof fluidity. Operable continuously by the engine is a pump 48, and samealso may be secured as at 49 to said engine.

Conduit 50 connects the reservoir to the pump 48 and line 5I therefromis the pressure supply line to the master valve 52 having manuallyoperable handle 53. This valve also has arm 54, see Fig. 5, operabletherewith. A branch 55 from the supply line 5I is divided as at 56 and51 and in the former is an adjustable relief valve 58 and in the latteris an open and closed valve 59. The latter is operated from arm 54 suchthat when handl-e53 of valve 52 is neutrally positioned, that is, cutsoff or closes line 5|, the valve 59 will be open and vice versa. "This`is to insure iluid cycling without pump locking.

Return conduit 60 from' valve 52 to reservoir `41 is connected to bothvalves 58 and 59 as at 62 and 63 respectively. A return line `6i fromthe rotary prime mover or motor 40 also connects t0 the reservoir returnline 60. This may be omitted as hereinafter pointed out. i

Extending from valve 52 are two conduits 64 and 55 each of whichterminates at a dual valve, see Fig. 4. Valve 66 is connected to line 64while valve 61 is connected to line 55. Valve 56 has connected theretotwo conduits 66 and 21 connected respectively to motor 40 and cylinder23. Valve 61 has connected thereto two conduits 69 and 26 connectedrespectively to motor 40 and cylinder 23.

Valves 66 and 61 have arms 10 and 1i respectively link connected as at12 for conjoint operation. Arm is extended as at 13 and connectedthereto is a dash mounted rod 14. A similar dash mounted rod 15 isconnected to the arm 10. Preferably these are pull rodsY or are ofBowdin Vwire type.

When the several Valves are positioned as illustrated in Figs. 4, 5 and6, pressure fluid from pump 48 is supplied by lines 5I and 65 to valve61 and thence by line 65 to pump 40 for wheel 28 rotation in onedirection. The fluid can exhaust by line 6| to reservoir 41.

When rod 15 is out and `rod 14 is in, pressure fluid from line 65 issupplied by line 25 to the top of cylinder 23 to raise the traversingwheel 28. Fluid in the opposite end of cylinder 23 exhausts by conduit21 to valve 66 and from same ,returns byline 64 to the valve 52 and fromthence by line 60 to the reservoir 41. Note the position of valve handle54 for these Atwo operations is not changed.

When valve handle 54 is moved substantially 90 to dotted line position(Fig. 5) pressure fluid above the piston in the cylinder 23 thenexhausts at line 25 and to valve 61 and from it by line 65 to valve 52which now connects line 65 to the return line 60 and to reservoir 41.

For American practice the sequence is to lower wheel 23 and traverse tothe right. Then traverse to the left and nally raise wheel 28. For theEnglish practice the connections may be reversed and the sequence willbe to lower wheel 28 and traverse to the left. Then traverse to theright and finally raise wheel 28. Only connections of lines 68 and 69 tomotor 40 need be reversed.

K' The foregoing is for conventional parking.

from pump 48, line 5l, valve 52 and line 64 is supplied to valve 65.With valves 66 and 61 positioned as illustrated, see Fig. 6, pressurefluid is supplied by line 68 to motor 40 for reverse or oppositerotation of wheel 28 and the motor Wastes as before, if desired, by line6l to the reservoir 41.

When valve 52 is positioned as last mentioned and rod 15 is pulled out,pressure fluid is supplied toY line 21V to lower the wheel 28. Fluid HReference will now be had to Figs. 7 to 9 inclusive wherein a singlecomposite valve, capable of dash mounting, replaces valve 52, 66 and 61aforesaid and but two lines 40a and 40b are required for motoractuation. Looking at Fig. 9, when the valve handle 200 is iirst turnedclockwise approximately '12 from the oi position, the uid will besupplied to cylinder 23 for lowering wheel 28. This ofi position iswhere no iiuid is supplied to the system, corresponding to valve 52being shut off. `Herein in Fig. 9 same corresponds thereto when channel205 is at the bottom of the gure.

Note in said Figs. 1 to 9 that core 20| in chamber 202 and to which stem200 is secured, includes an annular channel 203 which always registerswith port-204 connectible to supply line 5i. Extending longitudinally ofsaid core and in the periphery thereof is pressure supply channel 205.When the valve is clockwise moved 72 from the off position conduit 21,connected to port 206 then registering with channel 205, is suppliedwith fiuid to lower wheel 28. Fluid in cylinder 23 and above piston 20is returned by line 26 to port 201. v

Core 201 includes the central Waste bore 208 provided with transversepassage 209. Hence, when channel 205 registers with port 206, passage209 registers with bore 208. Note the super imposed passage 210 frombore 208fis now blocked off. Hence, the uid in line 26 wastes to thereservoir by line 60 herein connected to port 2H in cap 2I2 closing theend of body portion 202 containing the core. The chamber 2l3 between cap212 and the valve member 20! provides a leakage collection chamberalways wasting to the reservoir.

When stem 200 is advanced clockwise a second 72, the channel 205registers with port 2l4 connected to line 68 or one supply and exhaustline as 40a to motor 40 to secure rotation o wheel 28, now lowered andto the right to move the vehicle toward the curb. The motor power fluidreturns by line 40h-6'!!` to port 2|5. A trans verse passage 2I6 nowregisters therewith and wastes to bore 208 and thence to line 60 and thereservoir. Travel is stopped as before by moving the valve beyond thedescribed position.

When it is desired to move from the curb, the valve is further turned-clockwise a third 12 which now positions a passage 2l1 similar topassage 2 I6 and displaced 144 therefrom in registry with port 2|4 andline 68, see Fig. 8, and channel 205 is now registered with port 2I5.Motor travel accordingly is reversed and rotation of wheel 28 isreversed.

When desired traverse is eiected, the valve is moved from said positionto a iinal position wherein channel 205 now registers with port 201 toapply fluid pressure to line 26 and the top of cylinder 23 tc raisewheel 28. Fluid in cylinder 23 below piston 20 now returns by line 21 toport 296 and passes by passage 2li), then registering therewith, to bore288 for return to the reservoir.

When wheel 28 is fully raised, the valve member is returned to theorigina-l or oi position and normal vehicle usage is effected. From theforegoing, it will be noted that the motor 40 has but two lines 68 and69 or 40a and 4Gb respectively and the ilow of the pressure fluiddetermines the motor rotation direction. Hence, line 6I may be omitted.The foregoing valve accordingly is a singular simplification of thethree Valves illustrated in Figs. 5 and 6. Whenever front and rear unitsare incorporated, same are conduit coupled in multiple as illustrated inthe aforesaid patent.

As illustrated in Fig. 2, a semaphore arm 8l is projected from a housing82. In Fig. 3 a semaphore arm |8| is projected from a housing |82. Asillustrated in Fig. 4, housings 82 and |82 are connected in multiple bypressure lines 83 and Sli and same are connected by lines 85 and 8E tolines 26 and 21 respectively.

Thus, whenever pressure fluid is supplied to either end of cylinder 23,pressure uid is selectively supplied to the semaphore housing forextending or exposing same for warning purposes.

Referring to Fig. 10 casing 82 contains two cylinders 9B and 9| in whichare mounted pistons 92 and 93 respectively. These are rigidly connectedtogether as at 94 and portion 95 accordingly is reciprocable. A spring96 normally constrains the portion 95 in retracted position. Rigid withstem 95 is semaphore arm 8|.

Whenever pressure fluid is supplied to either end of cylinder 23,pressure uid is supplied to one of the two cylinders 90-9I to move thepiston therein in opposition to spring 9E and thus actuate or expose thesemaphore arm 8|. When the pressure is released, the spring 96 returnssaid arm to its retracted position. As stated, pressure to eithercylinder 90 or 9| secures warning operation.

While the invention has been illustrated and described in great detailin the drawings and foregoing description, the same is to be consideredas illustrative and not restrictive in character.

The several modifications described herein, as well as others which willreadily suggest themselves to persons skilled in this art, all areconsidered to be within the broad scope of the invention, referencebeing had to the appended claims.

The invention claimed is:

l. In a vehicle parking mechanism comprising a laterally movable wheelcapable of elevation and lowering, the combination of a single source offluid pressure, uid pressure operable reciprocable means for raising andlowering the wheel, fiuid pressure operable means for reversely rotatingthe wheel, valve means selectively connecting both of said means to saidrsource and controlling said means and comprising a body and a singlerotatable control member therein, the pressure source supply beingconnected to the valve means body at all times, a single waste connectedto the valve means body at all times, a pair of substantially parallelpassageways in the member, each passageway having a closed end, andoppositely directed, and each continuously connected at the opposite endto the supplyA and waste respectively, and lateral passageways in themember and body adapted for selective communication with the supply andwaste and connected to the uid pressure operable means, one of theparallel passageways being centrally disposed in the member, and anarcuate passageway peripherally disposed immediately beyond the closedend of said one passageway and connected to the other passageway remotefrom the closed end thereof.

2. Mechanism as dened by claim l wherein there is provided a reservoirto which the waste is always connected and a single connection isconstantly provided between said reservoir and said source of fluidpressure for closed cycle op eration, the reservoir being essentially ofnonpressure type.

3. Mechanism as defined by claim 2 where the source of pressure supplyis additionally connected through a pressure relief device to saidreservoir.

JOHN H. MOFFAT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,609,044 Williams Nov. 30, 19261,692,578 Rystedt Nov. 20, 1928 1,951,145 Girl et al Mar. 13, 19342,181,907 Moffat et al Dec. 5, 1939

